In most cases, the focus of improving production efficiency lies in enhancing the cutting edge's performance. By increasing the cutting ability of the tool’s edge, overall productivity can be significantly boosted. However, different parts often have unique characteristics that make tool overhang a critical factor in machining. As a result, the cutting edge's vibration resistance has become an area of growing concern. When a tool is extended beyond its optimal length, it tends to vibrate, which can negatively impact the process. While this issue can often be mitigated by using light cuts and gradually approaching the workpiece, it comes at the cost of reduced efficiency. In situations where the tool must enter a hole or cavity, a deflection force is generated, increasing the risk of vibration. Fortunately, Sandvik Coromant’s latest innovations not only address this challenge but also dramatically enhance production efficiency.
**Damping Tools**
Over the years, damping tools have undergone significant improvements. Compared to the technology introduced by Sandvik Coromant in the 1970s, today’s solutions are far more advanced. The original designs made previously impossible operations feasible, such as using tool overhangs up to ten times the tool diameter in some cases. Modern Silent Tools damping tools now represent the pinnacle of vibration-damping technology. With extensive research and real-world application, these tools have become increasingly reliable, helping to overcome new machining challenges and boosting productivity. They are widely used in applications requiring long tool overhangs, offering improved efficiency, tight tolerances, and enhanced process safety.
In today’s machining environment, operations like bore turning, boring, grooving, and milling often require longer tool overhangs, which are becoming more common. In some cases, multiple workpieces may need to be processed on the same setup. Unfortunately, many long overhang applications still struggle with poor performance, meeting only the minimum requirements—no vibration—but failing to achieve high productivity. Vibration leads to lower safety, poor part quality, increased noise, shorter tool life, and even scrap. As a result, cutting parameters are often limited to below the tool’s capability, raising costs and extending processing time.
**Milling Process**
During milling, the intermittent cutting action makes vibration more likely, especially when using long overhang tools. While proper tool selection and tool path optimization can help prevent vibrations, additional measures are needed when the overhang exceeds three times the shank diameter. As demand increases for tools with overhangs four times or more the shank diameter, overcoming vibration becomes essential to maintain efficiency. Low axial depth of cut and feed rates limit metal removal rates, making it difficult to achieve optimal performance. In many cases, long overhang tools are required for both milling and boring, particularly on multitasking machines where the B-axis spindle restricts direct access.
To counteract vibration, advanced damping shanks are now being developed to minimize amplitude with greater precision. This allows for accurate identification of vibration types and tailored damping settings. Recent R&D efforts have combined deep expertise in vibration damping technology to enable smoother, faster cutting. Although complete vibration elimination is not possible, modern systems now reduce it to a level that doesn’t affect the machining process. Advanced simulation methods, equipment, and measurement systems, along with a thorough understanding of structural dynamics, help eliminate harmful forces on the tool.
For milling, the new standard adapter maintains machining performance despite tool overhang. It minimizes typical amplitudes across two overhang ranges. There are currently two damping shank lengths designed for overhangs of 4–5x and 6–7x the shank diameter. Custom adapters allow for even longer extensions. These systems are ideal for the most common long overhang applications in milling. The new solution boosts productivity while significantly reducing the return on investment for the adapter.
This milling adapter enables deeper axial cuts and higher feed rates, greatly increasing productivity potential. It opens up high-efficiency milling options for features like large pockets or when using larger face mills. New products can extend tool overhangs or increase them without compromising productivity.
**Inner Hole Turning**
Inner hole turning involves a broader range of tool overhangs. Many components feature deep holes with strict overhang requirements, ranging from 4x to 14x the mast diameter. Proper tool selection and application are crucial, as hole turning is highly sensitive to vibration. One key advantage of the Silent Tools damper mast is its design, which places the damping mechanism as close to the cutting edge as possible, ensuring a rapid response to any vibrational tendencies.
Standard steel masts are suitable for up to 4x overhangs, while solid carbide masts work well for 6x. For longer overhangs, damping masts are necessary. Steel damping boring bars are used for 10x diameters, and reinforced hard alloy versions for 14x. Grooving and threading typically use shorter overhangs. Additionally, each machine tool has unique vibration characteristics, meaning the same process might vibrate at different frequencies depending on the machine. Therefore, developing a versatile damping tool that can operate effectively across a wide frequency range is essential.
Outdoor Table And Chair
Our resort outdoor table and chair can be seen in all luxury resorts in the world.
Choose from aluminum/rattan material, with any design can be custom made.
All resort chaises are made with commercial standards and withstand outdoor elements such as sun tanning oils, chlorine, sun, sand, salt, humidity.
Outdoor Dining Sets,Patio Dinning Table Sets,Garden Furniture Set,Commercial Patio Table And Chair Sets,Outdoor Lounge And Dining Sets,outdoor rattan furniture
Guangzhou Hotop Hotel Supplies Co.,Ltd , https://www.hotopsupply.com